We conduct global three-dimensional radiation magnetohydrodynamic simulations of the
inner regions of accretion flows around a 5× 10 8 M⊙ black hole, with mass accretion rates …

Accreting black holes (BHs) launch relativistic collimated jets, across many decades in
luminosity and mass, suggesting the jet launching mechanism is universal, robust, and scale …

Rapid, large amplitude variability at optical to X-ray wavelengths is now seen in an
increasing number of Seyfert galaxies and luminous quasars. The variations imply a global …

We study X-ray spectra from the outburst rise of the accreting black hole binary MAXI J1820+
070. We find that models having the disk inclinations within those of either the binary or the …

We present global 3D radiation magnetohydrodynamic simulations of accretion onto a 6.62
solar-mass black hole, with quasi-steady-state accretion rates reaching 0.016–0.9 times the …

We present axisymmetric two-temperature general relativistic radiation
magnetohydrodynamic simulations of the inner region of the accretion flow onto the …

We present and analyze a set of three-dimensional, global, general relativistic radiation
magnetohydrodynamic simulations of thin, radiation-pressure-dominated accretion disks …

Rings and gaps have been observed in a wide range of proto-planetary discs, from young
systems like HLTau to older discs like TW Hydra. Recent disc simulations have shown that …

In a companion paper, we reported the self-consistent formation of quasar accretion disks
with inflow rates $\sim 10\,{\rm M_ {\odot}\, yr^{-1}} $ down to< 300 Schwarzschild radii from …

We perform a set of general relativistic, radiative, magneto-hydrodynamical simulations (GR-
RMHD) to study the transition from radiatively inefficient to efficient state of accretion on a …